29 #include "gc/g1/g1GCPhaseTimes.hpp"
30 #include "gc/g1/g1InCSetState.hpp"
31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
32 #include "gc/g1/g1MMUTracker.hpp"
33 #include "gc/g1/g1Predictions.hpp"
34 #include "gc/g1/g1YoungGenSizer.hpp"
35 #include "gc/shared/gcCause.hpp"
36 #include "utilities/pair.hpp"
37
38 // A G1Policy makes policy decisions that determine the
39 // characteristics of the collector. Examples include:
40 // * choice of collection set.
41 // * when to collect.
42
43 class HeapRegion;
44 class G1CollectionSet;
45 class CollectionSetChooser;
46 class G1IHOPControl;
47 class G1Analytics;
48 class G1YoungGenSizer;
49
50 class G1Policy: public CHeapObj<mtGC> {
51 private:
52 G1IHOPControl* _ihop_control;
53
54 G1IHOPControl* create_ihop_control() const;
55 // Update the IHOP control with necessary statistics.
56 void update_ihop_prediction(double mutator_time_s,
57 size_t mutator_alloc_bytes,
58 size_t young_gen_size);
59 void report_ihop_statistics();
60
61 G1Predictions _predictor;
62 G1Analytics* _analytics;
63 G1MMUTracker* _mmu_tracker;
64
65 double _full_collection_start_sec;
66
67 uint _young_list_target_length;
68 uint _young_list_fixed_length;
69
70 // The max number of regions we can extend the eden by while the GC
71 // locker is active. This should be >= _young_list_target_length;
72 uint _young_list_max_length;
73
74 SurvRateGroup* _short_lived_surv_rate_group;
75 SurvRateGroup* _survivor_surv_rate_group;
76
77 double _reserve_factor;
78 uint _reserve_regions;
79
80 G1YoungGenSizer _young_gen_sizer;
81
82 uint _free_regions_at_end_of_collection;
83
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29 #include "gc/g1/g1GCPhaseTimes.hpp"
30 #include "gc/g1/g1InCSetState.hpp"
31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
32 #include "gc/g1/g1MMUTracker.hpp"
33 #include "gc/g1/g1Predictions.hpp"
34 #include "gc/g1/g1YoungGenSizer.hpp"
35 #include "gc/shared/gcCause.hpp"
36 #include "utilities/pair.hpp"
37
38 // A G1Policy makes policy decisions that determine the
39 // characteristics of the collector. Examples include:
40 // * choice of collection set.
41 // * when to collect.
42
43 class HeapRegion;
44 class G1CollectionSet;
45 class CollectionSetChooser;
46 class G1IHOPControl;
47 class G1Analytics;
48 class G1YoungGenSizer;
49 class GCPolicyCounters;
50
51 class G1Policy: public CHeapObj<mtGC> {
52 private:
53 G1IHOPControl* _ihop_control;
54
55 G1IHOPControl* create_ihop_control() const;
56 // Update the IHOP control with necessary statistics.
57 void update_ihop_prediction(double mutator_time_s,
58 size_t mutator_alloc_bytes,
59 size_t young_gen_size);
60 void report_ihop_statistics();
61
62 G1Predictions _predictor;
63 G1Analytics* _analytics;
64 G1MMUTracker* _mmu_tracker;
65
66 GCPolicyCounters* _policy_counters;
67
68 double _full_collection_start_sec;
69
70 uint _young_list_target_length;
71 uint _young_list_fixed_length;
72
73 // The max number of regions we can extend the eden by while the GC
74 // locker is active. This should be >= _young_list_target_length;
75 uint _young_list_max_length;
76
77 SurvRateGroup* _short_lived_surv_rate_group;
78 SurvRateGroup* _survivor_surv_rate_group;
79
80 double _reserve_factor;
81 uint _reserve_regions;
82
83 G1YoungGenSizer _young_gen_sizer;
84
85 uint _free_regions_at_end_of_collection;
86
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